Arlen Ness 600-051

The Crossfire air cleaner's design is inspired by the Prodigy wheel found on late Touring models. Each Crossfire intake features a radius clear polycarbonate window, improved leg clearance & patented performance features to take your motorcycle to the next level  

• Patented backing plate technology (US Patent: US 10,851,741 B1)
• Clear polycarbonate window formed with a radius shape
• New reduced intake height for improved leg clearance 
• High performance black pre-oiled air filter 
• CNC machined from forged billet aluminum 
• Patent-Pending oil catch / reservoir 
• Increases horsepower, torque & mileage 
• Eliminates oil blow-bye on M8 engines 
• Chrome finish 

FORGED BILLET ALUMINUM BACKING PLATE:

• CNC machined from forged billet aluminum 
• Features Patent-Pending next generation hidden breather technology. Each hidden breather is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubes. This eliminates the need for any external hoses or hardware for a virtually closed loop system 
• Radius air inlet for unobstructed airflow
• Specially designed breather bolts are hidden under billet covers for a clean look 
• Eliminates oil blow-bye issues associated with M8 engines by directing any excess breather oil back into the engine 
• Patent-Pending Oil Catch / Reservoir. To ensure no oil saturates the filter and restricts your airflow, the integrated oil catch collects any excess engine oil before it reaches the air filter. Bolt-on design allows oil catch to be serviced when you service the filter element 

PERFORMANCE AIR FILTER:

• Black pre-oiled performance air filter 
• Designed for a clear polycarbonate top 
• Re-usable / washable filter 
• Rain socks / pre-filters and filter service kits available separately 

AIR FILTER HOUSING & CLEAR WINDOW 

• Outer air filter housing is CNC machined from forged billet aluminum 
• Clear Polycarbonate window allows you to view your engine's intake system in action
• Polycarbonate is hard-coated for long lasting durability and protection from engine oil and UV sunlight   

99-17 TWIN CAM (EXCEPT: FBW) 

• 2001-2017 Twin Cam Delphi EFI (Fuel Injected)
• 1999-2006 Twin Cam CV Carb
• *NOTE: Will not fit Fly-By-Wire Models: 08-17 FLT Touring  / 16-17 Softail / 16-17 Dyna FXDLS & 99-01 F.I. FLT 

 08-16 TOURING / 16-17 SOFTAIL  (FBW)

• 2008-2016 FLT Touring / Bagger - FLHT / FLHR / FLHX / FLTR / H-D FL Trike 
• 2016-2017 Softails 
• 2016-2017 Dyna FXDLS 
• 2014-2015 FLSTNSE / 13-14 FXSBSE / 11-12 FLSTSE
• *NOTE: Twin Cam models equipped w/ FBW (Fly-by-Wire or Throttle-by-Wire) 

 1991-2021 XL SPORTSTER 

• 1991-2021 Sportster 883 / 1200  with CV Carb or Delphi EFI 

 2017-2023 M8 MODELS (EXCEPT: 2023 FLHXSE & FLTRXSE)

• 2017-up FLT Touring / Bagger - FLHT / FLHR / FLHX / FLTR 
• 2018-up Softail Models 

  22-UP NIGHTSTER SPORTSTER 

• 2022-up RH975 models

2024-up Touring / 2025 Softail

• Touring Models

  2026 FLHXLSE CVO Street Glide Limited

  2026 FLHXL Street Glide Limited

  2026 FLTRXL Road Glide Limited

  2026 FLHXSTSE CVO Street Glide ST

  2026 FLTRXP Police Road Glide

  2024-2026 FLHX Street Glide

  2024-2026 FLTRX Road Glide

  2023-2026 FLHXSE CVO Street Glide

  2024-2026 FLTRXSTSE CVO Road Glide ST

  2025 FLHXU Street Glide Ultra

  2023-2025 FLTRXSE CVO Road Glide

  SOFTAILS Models

  2025-2026 FXLRS Low Rider S

  2025-2026 FXLRST Low Rider ST

  2025-2026 FLFB Fat Boy

  2025 FLSTFI Fat Boy Gray Ghost

  2025-2026 FLHC Heritage Classic

  2025-2026 FXBB Street Bob

  2025-2026 FXBR Breakout

  TRIKES

  2026 FLHLTSE CVO Steet Glide 3 Limited

  2026 FLTRT Road Glide 3

  2026 FLHLT Steet Glide 3 Limited

FITMENT DISCLAIMER

Fitment information is provided as a general reference only and is not guaranteed for any motorcycle, whether stock or modified. Compatibility may vary by year, model, and individual configuration.

Customers are responsible for verifying fitment prior to purchase. House of Harley-Davidson assumes no liability for purchases made based on incorrect or unverified fitment information.

Please TEXT 414-282-2211 with any questions before ordering, or use the chat below.